Finding the Fourth Proportional to 5,455.92, 7,480.05 and 5,357.46

Step by Step Solution

1. Step 1: Write the proportion equation
   5,455.92 : 7,480.05 = 5,357.46 : x
2. Step 2: Convert to fraction form
   5,455.92/7,480.05 = 5,357.46/x
3. Step 3: Cross multiply
   5,455.92x = 7,480.05 × 5,357.46
4. Step 4: Simplify right side
   5,455.92x = 40,074,068.67
5. Step 5: Solve for x
   x = 40,074,068.67/5,455.92
6. Step 6: Final answer
   x = 7,345.06